azureblog.co.uk
← cd ~/graph-permissions
// graph-permissions · User

User.Read.AllMicrosoft Graph permission · Medium risk

Allows the app to read user profiles without a signed in user.

Application permission

Medium risk

Read all users' full profiles. Allows the app to read user profiles without a signed in user.

IDdf021288-bdef-4463-88db-98f22de89214
ConsentAlways needs admin consent
RiskReads data across the tenant without a signed-in user.

Delegated permission

Low risk

Read all users' full profiles. Allows the app to read the full set of profile properties, reports, and managers of other users in your organization, on behalf of the signed-in user.

IDa154be20-db9c-4678-8ab7-66f6cc099a59
ConsentNeeds admin consent
RiskRead access, limited to what the signed-in user can see.

Least-privilege alternative

If you only need names and emails, User.ReadBasic.All is enough.

Grant it to an app

In the portal: App registrations › your app › API permissions › Add a permission › Microsoft Graph › Application permissions, then grant admin consent. Or with Graph PowerShell:

powershell5 lines
Connect-MgGraph -Scopes "Application.Read.All", "AppRoleAssignment.ReadWrite.All"
$graph = Get-MgServicePrincipal -Filter "appId eq '00000003-0000-0000-c000-000000000000'"
$app   = Get-MgServicePrincipal -Filter "appId eq '<your app's client id>'"
New-MgServicePrincipalAppRoleAssignment -ServicePrincipalId $app.Id `
    -PrincipalId $app.Id -ResourceId $graph.Id -AppRoleId "df021288-bdef-4463-88db-98f22de89214"

Ask for it when signing in

Delegated permissions act as the signed-in user, so the app can never do more than that user can.

powershell1 line
Connect-MgGraph -Scopes "User.Read.All"

Which apps already have it?

powershell6 lines
# Apps that hold User.Read.All as an application permission
Connect-MgGraph -Scopes "Application.Read.All"
$graph = Get-MgServicePrincipal -Filter "appId eq '00000003-0000-0000-c000-000000000000'"
Get-MgServicePrincipalAppRoleAssignedTo -ServicePrincipalId $graph.Id -All |
    Where-Object AppRoleId -eq "df021288-bdef-4463-88db-98f22de89214" |
    Select-Object PrincipalDisplayName, PrincipalId, CreatedDateTime
powershell6 lines
# Apps with delegated consent for User.Read.All
Connect-MgGraph -Scopes "Application.Read.All", "Directory.Read.All"
$graph = Get-MgServicePrincipal -Filter "appId eq '00000003-0000-0000-c000-000000000000'"
Get-MgOauth2PermissionGrant -All |
    Where-Object { $_.ResourceId -eq $graph.Id -and ($_.Scope -split " ") -contains "User.Read.All" } |
    Select-Object ClientId, ConsentType, PrincipalId

Other User permissions

Check every app in your tenant → Permission explainer

Sources